Determination of axial forces during the capillary breakup of liquid filaments – the tilted CaBER method
Determination of axial forces during the capillary breakup of liquid filaments – the tilted CaBER method
复制标题
液体细丝毛细管破裂过程中轴向力的测定 – 倾斜 CaBER 方法
DOI:
10.1007/s00397-012-0649-3
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发表时间:
2012
期刊:
影响因子:
2.3
通讯作者:
Willenbacher N
中科院分区:
文献类型:
--
作者:
Sachsenheimer D;Hochstein B;Buggisch H;Willenbacher N
The capillary breakup extensional rheometry (CaBER) is a versatile method to characterize the elongational behavior of low-viscosity fluids. Commonly, data evaluation is based on the assumption of zero normal stress in axial direction ($\upsigma_{\rm zz}=0$). In this paper, we present a simple method to determine the axial force using a CaBER device rotated by 90° and analyzing the deflection of the filament due to gravity. Forces in the range of 0.1–1,000 μN could be assessed. Our study includes experimental investigations of Newtonian fructose solutions and silicon oil mixtures (viscosity range, 0.9–60 Pa s) and weakly viscoelastic polyethylene oxide (PEO,g/mol) solutions covering a concentration range fromc≈c* (critical overlap concentration) up toc>ce(entanglement concentration). Papageorgiou’s solution for the stress ratio $\upsigma_{\rm zz}/\upsigma_{\rm rr}$ in Newtonian fluids during capillary thinning is experimentally confirmed, but the widely accepted assumption of vanishing axial stress in weakly viscoelastic fluids is not fulfilled for PEO solutions, ifceis exceeded.
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DOI:
--
发表时间:
1971
期刊:
影响因子:
--
作者:
J. P. Lenczyk;K. M. Kiser
通讯作者:
K. M. Kiser
影响因子:
3.1
作者:
M. F. Webster;H. Matallah;K. Sujatha;M. J. Banaai
通讯作者:
M. F. Webster;H. Matallah;K. Sujatha;M. J. Banaai
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
J. Kennedy;J. Meadows;Peter A. Williams
通讯作者:
Peter A. Williams
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
G. Mckay;J. Ferguson;N. Hudson
通讯作者:
N. Hudson
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
C. Clasen
通讯作者:
C. Clasen